
array = [1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,0,"张三","李四","王五"]

Array.prototype.insert = function(index, value){
    this.splice(index,0, value);
}
console.log(array)
array.insert(4, 10)
console.log(array)
array.insert(3, "测试")
console.log(array)

